Antisymmetric galaxy cross-correlations in and beyond $\Lambda$CDM

• DOI: 10.48550/arxiv.2402.14782
• Publication Date: 2024-02-22
• Authors: Eleonora Vanzan; Alvise Raccanelli; Nicola Bartolo
• Keywords: Antisymmetric relation

Many different techniques to analyze galaxy clustering data and obtain cosmological constraints have been proposed, tested used. Given the large amount of that will be available soon, it is worth investigating new observables ways extract information from such datasets. In this paper, we focus on antisymmetric correlations, arise in cross-correlation populations when small-scale power spectrum modulated by a long-wavelength field. $\Lambda$CDM happens because nonlinear sources trace underlying matter distribution ways. Beyond standard model, observable sourced naturally various physics scenarios. We derive, for first time, its complete expression up second order redshift space, show improves detectability compared previous evaluations at real space. Moreover, explore few potential applications use detect models with vector modes, or where types respond modulating long mode, anisotropic privileged directions sky. This shows how correlations can useful tool testing exotic models.